Fluid-pressure-regulating valve



Mar. 7,1922.

Pafented C. L. BASTIAN'.

FLUID PRESSURE REGUIATING VALVE. APPLICATION FILED MAY I3, I92I.

UNITED STATES CHARLES L. BASTIAN, 0F CHICAGO, ILLINOIS.

FLUID-PRESSURE-REGULATIG- VALVE.

Specification of Letters Patent.

Patented Mar. 7, 1922.

Application led May 13, 1921. Serial No. 469,339.

To all whom t may concern.' c

Be it known that I, CHARLES L. BAsTIAN, a citizen of the United States, residin at Chicago, in the county ,of Cook and tate of Illinois, have invented certain new and useful Improvements in Fluid-Pressure- Regulating Valves, of which the following is a specification.

This invention relates to improvements in iiuid pressure regulating valves which are used for many purposes, including the regulation and, delivery of gases to Oxy-acetylene welding and cutting apparatus at desired pressures.

My invention has for its object generally to provide a pressure regulating valve of improved construction which makes it more substantial in service, more efficient in operation and more accurate in results than has heretofore been customary in such valves.

One diliculty with existing valves is the necessity for readjusting the regulating spring from time to time as the pressure supply reduces in order to maintain delivery of at least approximately the required volume of gas. Since such readjustment requires manual manipulation it is at best performed irregularly and spasmodically, and consequently an even flow of uniform volume of gas is only obtained where especial care is exercised.

A very important object of the invention is to automatically maintain the delivery of a predetermined volume of gas regardless' of the fact that the pressure supply is constantly decreasing; and, more specifically, my object is to utilize the pressure supply to automatically control the pressure sensitive means and enlarge the opening between the nozzle and the disk in proportion to the decrease of pressure supply to constantly maintain an even delivery of gas in a uniform volune.

In the drawings I have illustrated` a selected embodiment of the invention and referring thereto Fig. 1 is a vertical section through a fluid pressure regulating valve of the low pressure type and embodying the invention;4

Fig. 2 is a plan view partly in section on the line 2-2 of Fig. 1;

Fig. 3 is a detail sectional view showing the invention embodied in another form in a Huid pressure regulating valve of the high pressure type.

Referring -to the drawings, the valve casino` comprises a body 5 provided with a gas inet 6 and an outlet 7 through which the gas may be delivered to the work. Pressure gauges'may be connected to the inlet at 6 and to the outlet at 7. In Fig. 1 a rubber diaphragm 8 is clamped between the body 5 and the bonnet 9 by bolts 10. In Fig. 3 I have shown' a metal diaphragm 11 which may be secured in the valve as shown in my co-pending application Serial No. 383,645, filed May 24, 1920. The bonnet 9 is preferably provided with openings13 to permit lnstant escape of pressure without blowing off the bonnet in the event the diaphragm is broken. A yoke 14 has a threaded stem 15 passing through a central opening in the with a nipple 17 forming a guide for arcgulating spring 18 carrying at its upper end a button 19 that receives the thrust of an adjusting screw 20 threaded in the end 21 of a tubular extension 22 of the bonnet. An inlet nozzle 23 is threaded in a socket 24 in a bridge 25 and connects with the inlet passage 6. The yoke l14 straddles the nozzle and carries a support 26 having a valve disk 28. Depending from the support 26 is a guide 30 which operates in a socket 32 in the cap A balance spring 34 interposed between the support 26 and the cap 33 tends to hold the valve disk 28 against the end of the nozzle 23.

The inlet nozzle and valve disk are preferably constructed as set forth in my copendlng application Serial No. 272,421, filed January 22, 1919, but the present invention may be embodied in valves having nozzles and disks constructed otherwise, if desired.

It" is customary to turn the screw 20 to adjust the tension of the spring 18 so that thev desired pressure as shown by the gauge will be delivered to the work. The tension of the regulating spring 18 overcomes the tension of the'balance spring 34 and operates the diaphragm 8 to carry the disk 28 away from the nozzle 23 suiciently to ad mit pressure to the chamber 35 at the redetermined pressure to be delivered. Smce the screw adjustment is made with relation to the initial pressure supply it is apparent that, as the pressure sup 1y decreases, the screw must be readjuste if the disk and nozzle are to be kept in operative relation necessary to maintain uniformity in de- 'diaphragm and enga ng the thread of a 'flanged collar 16, whlch latter is provided los Y livery volume. Ileretofore it has been customary to manually adjust the screw from time to time While the valvev Was in use, in an effort to proportion the tension of the springs to the pressure supply as the supply diminishes and thereby secure as nearly as possible a uniform volume at the nozzle intension after the lnitial setting, so that it is ,variation in automatically adjusted in proportion to the pressure supply as the supply decreases. Y

In the drawings I have shown this feature of my invention embodied in a simple and etficientfmeans comprising a diaphragm 36 secured tothe upper lmd cfa short cylinderl 37 by a liange ring 38 and receiving the pressure supply through a assage 39 connecting the cylinder 37 Wlth the inlet 6. In F ig. l, a plunger 40 is guided in the yoke 14 and its head is arranged to be pressed by the diaphragm against the yoke with a pressure corresponding to the supply pressure so that the action of the adjustlng spring will be modified accordingl When the supply pressure isy high, the diaphragm 36 Will resist the adjustin spring strongly and support the valve isk 'close lto the nozzle, b-ut as the supply pressure diminishes the resistance of the diaphragm will correspondingly dimisih and permit the valve disk to be forced avvay from the nozzle sufficient to compensate for the reduced pressure. The diaphragm 36 forms an efficient packing which prevents the escape of pressure into the valve chamber 35.

In Fig. 1 I have shown the plunger as hav` ing a spherical head i0 and a stem L.il at the top guided ina socket 42 in the yoke,

but I do not wish to be limited in this respect for the .structure may be greatly varied Without departing from the invention. A suitable modification for certain vvork is shown in Fig. 3, Where this plunger 1s replaced by va straight stem 43, extending through a cap ist and with its ends directly ,engaging the diaphragm and the yoke respectively.

Other changes in the details of construction and arrangement of parts may be made Without departing from the spirit or sacriicing the advantages of the invention and I reserve the right to make all such changes as fairly fall Within the scope of the appended claims..

I claim:

1. In a v pressure regulatin valve, the combination of a casing providing a chamber havingan inlet and an outlet, pressure sensitive means for controlling the inlet to sald chamber, primary regulating' means adapted to adjust said pressure sensitive means to admit a desired volume of fluid at incense the initial pressure ofthe supply, and auxiliary regulating means acting upon said pressure sensitive means to maintain a constant inlet volume as the pressure supply decreases.

2. In a pressure regulating valve, the combination of a casing providing a chamber having an inlet and an outlet, pressure sensitive means for controlling the inlet to said chamber, prim-ary regulating means adapted to adjust said pressure sensitive means to admit a desired volume of fluid at the initial pressure of the'supply, and auxiliary regulating means dependent upon the inlet pressure and acting on said pressure sensitive means to maintain a constant inlet volume-as the pressure supply decreases.

3. In a pressure regulating valve, the combination of a casing providing aI chamber having an inlet and an oulet, pressure sensitive means for controlling the inlet to said chamber, primary regulating means adapted to adjust the pressure sensitive. means to admit adesired volume of fluid at the initial vpressure of the supply, and

` auxiliary regulating means dependent upon `the inlet pressure and acting on and 1n opposition to the pressure sensitive means for automatic-ally relieving said pressure sensitive means proportionately to the decrease of pressure supply to permit said pressure sensitive means to maintain a constant inlet volume as the pressure supply decreases.

` I5. In a pressure regulating valve, the combination of a casing providing a chamber having an inlet and an outlet, pressure sensitive means for controlling the inlet to said chamber, primary regulating means adapted to adjust the pressure sensitive means to admit a desired volume of Huid at the initial pressure of the supply, and auxiliary regulating means opposed to said primary regulating means and operated by the pressure supply andV acting on said pressure sensitive means for automatically relieving said pressure sensitive means pro portionately to the decrease of pressure supply to permit said pressure sensitive means to maintain aconstant inlet volume as the pressure supply decreases.

6. lin a pressure regulating valve, the combination of a casing providing a cham# ber having an inlet and an oulet, pressure sensitive meansv for vcontrolling the inlet to said chamber and comprising a. valve disk normally engaging said inlet, primary regulating means adapted to adjust saidpressure sensitive means to move valve disk sufficiently to admit a desired volume of fluid at the initial pressure of the supply, and auxiliary regulating means for automatically increasing the extent of movement of said disk relative to the inlet as the pressure supply decreases to maintain the inlet volume constant. X

7. ln a pressure regulating valve, the combination of a casing providing a chamber having an inlet and an outlet, pressure sensitive ,means for controlling the inlet to said chamber and comprising a valve disk normally engaging said inlet, primary regulating means adapted to adjust said pressure sensitive means to space said valve disk from said inlet a suliicient distance to admit a desired volume of huid at the :initiall pres' sure ot the supply, and dexible auxiliary adjusting means operated by the said pressure supply tor automatically increasing the spacingot said disk relative to the inlet as the pressure supplydecreases to maintain the inlet volume constant. l

8. ln a pressure regulating valve, the com-` regulating means for automatically modifyj ing the action or" said pressure sensitive means to mamtain a constant inlet volume as the pressure supply dcsreases.

9. ln a pressure regulating valve, the combination of a casing providing a chamber having an inlet and an outlet, pressure sensitve .means for controlling the inlet to said chamber, primary regulating means adapted to adjust the pressure sensitive means to admit a constant volume of Huid atl the initial pressure of the supply, and a diaphragm Within the chamber and operated by the pressure supply for automatically 'controlling said pressure sensitive means to maintain a constant inlet volume `as the pressure supply decreases.

10. ln a pressure regulatin valve the combination of a casing provi ing a chamber having an inlet and an outlet, pressure sensitive means for 'controlling the inlet to said chamber and including a valve disk adapted to be moved away from the inlet to permit entrance of pressure to the chamber, primary regulating' means adapted to adjust said pressure sensitive means to separate said valve disk from-said inlet a sufticient distance to admita desired volume ofy fluid at-the initial pressure of thel supply, and a diaphragm operated by the pressure supply to automatically increase the distance between the valve disk and the inlet as the pressure supply decreases to maintain the inlet volume constant.

l1. ln a pressure regulating valve, the combination of a casing providing a chamber having an inlet and an outlet, a nozzle connected to said inlet, a valve disk to engage said nozzle, pressure sensitive means to control the movement of said valve disk relative to said nozzle, primary regulating means adapted to move said valve disk from said nozzle a suflicient distance to admit a desired volume of duid at the initial pressure ot' the supply, and a diaphragm operatively engaging said pressure sensitive means and adapted to be operated by the pressure supply for automatically enlarging the inlet as the pressure supply decreases to maintain a constant inlet volume.

12. ln a pressure regulating valve, the combination of a casing providing a chamber having an inlet and an outlet, a nozzle connected to'said inlet, a valve disk to engage said nozzle, pressure sensitive means to control the movement of said valve disk relative to said nozzle, primary regulating means adapted to space said nozzle from said inlet a suiiicient distance `to admit a desired volume of iluidl at the initial p-ressure of the supply, and a diaphragm operativelyengaging the pressure sensitive means at one side and being acted upon by the supply pressure at .the other side, whereby said valve disk and nozzle are further separated as the supply pressure decreases.

13. ln a pressure regulating valve, the combination o@ a casing providing a chamber having an inlet and an outlet, a nozzle connected to said inlet, a valve disk to enico las'

gage said nozzle, pressure sensitive vmeans disk and nozzle are further separated as the supply pressure decreases.

y14. ln a pressure regulating valve, the combination of a casing providing a chamber having an inlet and an outlet, .pressure sensitive means for controlling the inlet toy said chamber, and means for automatically ll 11E controlling said pressure sensitive means to maintain a constant inlet volume as the pressure supply decreases comprising a cylinder in open communication with the pressure supply, a diaphragm in the cylinder and a plunger interposedbetween the diaphragm and said pressure sensitive means.

15. In a pressure regulating valve, the combination of a casing providlng a chamber having an inlet and an outlet, a nozzle connected to said inlet, a valve disk to engage said nozzle, pressure sensitive means to control the movement of said valve disk relative to said nozzle,'and means connected to said nozzle and operatively engaging said pressure sensitive means and adapted .to be operated by the pressure supply for automatically enlarging the inlet as the pressure supplyT decreases to maintain a constant inlet volume. 4

16. In a pressure regulating valve, the combination of a casing providing a chamber having an inlet and an outlet, a nozzle connected withS said inlet, a yoke movable relative to said nozzle and carrying a valve disk adapted to close said nozzle, pressure sensitive means to control the osition of said Valve diskl relative to said)` nozzle, a

' plunger operatively engaging said yoke and adapted to be acted upon by the pressure supply to modify the action of the pressure sensitive means corresponding to changes in the pressure supply, and a diaphragm serving to prevent the escape of pressure While communicating the force ot the supply presv sure to said plunger.

` 17. A pressure regulating valve comprising a casing having a chamber provided with an inlet and an outlet, a valve for the inlet, elastically yieldable means tending to open the valve, pressure actuated means subject to outlet pressure and tending to close the valve, and other pressure actuated means subject to inlet pressure and acting upon the first mentioned pressure actuated means to modify the action thereof.

' 18. A. pressureregulating valve comprisiaoaeae ing a casing having a chamber provided With f an inlet and an outlet, a valve for the inlet, elastically yieldable means tending to open the valve, pressure actuated means includlng a diaphragm sub-ject to outlet pressure and tending to close the valve, and other pres: sure actuated means including a diaphragm subjectto inlet pressure and acting upon the first mentioned pressure actuated means to modify the action thereof.`

19. A. pressure regulating valve comprising a casing having a pressure chamber provided With' an inlet and an outlet, an inlet valve having a single form of movement, elastically yieldab-le means tending to vopen the valve, pressure actuated means subject to outlet pressure and tending to close the valve, and other pressure actuated means subject to inlet pressure and supplementing the'. operation of the first mentioned pressure l actuated means.

20. A pressure regulating valve comprising a casing having a chamber provided with an inlet and an outlet, an inlet valve having a single form of movement, elastically yieldable means tending to open the valve, pressure actuated means including a diaphragm subject to outlet pressure and tending to close the valve, and other pressure actuated means including a diaphragm subject to'inlet pressure and supplementing the operation of the irst mentioned pressure actuated means.

21. A pressure regulating valve comprising a casing having a pressure chamber provided With an inlet and an outlet, an inlet valve having' a single forml of movement, elastically yieldable means tending to move the inlet valve in one direction, pressure actuated means tending to move the valve in the opposite direction and .subject to chamber pressure, and other means operated by inlet pressure and supplementing the operation of the rst mentioned pressure actuated CHARLES L. BAS'MAN. 

